Allowance for Loan and Lease Losses - Loans that were Evaluated for Impairment by Loan Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Unpaid principal balance [Abstract]
With no related allowance recorded	$ 10,197	$ 14,004
With an allowance recorded	5,335	9,424
Recorded investment [Abstract]
With no related allowance recorded	4,777	12,804
With an allowance recorded	2,414	3,274
Related allowance [Abstract]
Related allowance	398	1,041
Average recorded investment [Abstract]
With no related allowance recorded	9,738	13,975
With an allowance recorded	1,965	2,479
Interest income recognized [Abstract]
With no related allowance recorded	568	377
Commercial real estate [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	1,323	6,632
With an allowance recorded	926	926
Recorded investment [Abstract]
With no related allowance recorded	931	6,113
With an allowance recorded	538	682
Related allowance [Abstract]
Related allowance	77	200
Average recorded investment [Abstract]
With no related allowance recorded	4,144	5,089
With an allowance recorded	334	529
Interest income recognized [Abstract]
With no related allowance recorded	335	98
Construction and land development [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	546	894
Recorded investment [Abstract]
With no related allowance recorded	145	683
Average recorded investment [Abstract]
With no related allowance recorded	376	2,233
With an allowance recorded	90	145
Interest income recognized [Abstract]
With no related allowance recorded		71
Commercial and industrial [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	2,662	5,358
With an allowance recorded	2,500	2,500
Recorded investment [Abstract]
With no related allowance recorded	2,576	5,118
With an allowance recorded	111	728
Related allowance [Abstract]
Related allowance	100	301
Average recorded investment [Abstract]
With no related allowance recorded	4,314	5,786
With an allowance recorded	172	688
Interest income recognized [Abstract]
With no related allowance recorded	233	208
Residential real estate [Member]
Unpaid principal balance [Abstract]
With an allowance recorded	1,033	1,068
Recorded investment [Abstract]
With an allowance recorded	889	959
Related allowance [Abstract]
Related allowance	27	28
Average recorded investment [Abstract]
With an allowance recorded	938	864
Leases [Member]
Unpaid principal balance [Abstract]
With an allowance recorded	876	95
Recorded investment [Abstract]
With an allowance recorded	876	95
Related allowance [Abstract]
Related allowance	194	80
Average recorded investment [Abstract]
With an allowance recorded	243	108
Tax certificates [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	5,666	1,120
With an allowance recorded		4,835
Recorded investment [Abstract]
With no related allowance recorded	1,125	890
With an allowance recorded		810
Related allowance [Abstract]
Related allowance		432
Average recorded investment [Abstract]
With no related allowance recorded	904	867
With an allowance recorded	$ 188	$ 145